Coacervation

The collection of colloidal particles into droplets held together by electrostatic attraction. This term for the equilibrium state of colloidal systems was introduced in 1929

Coach lace (narrow fabric)

A woven narrow fabric on the face of which is an uncut pile design, generally incorporating one weft, but two or three wefts are sometimes used for further ornamental effects. It is used to give finish to the upholstery of railway carriages and of other vehicles.

Coagulation

The precipitation of particles from a suspension in a liquid usually resulting in formation of a gel.

Coagulation Bath

A liquid bath that serves to harden viscous polymer strands into solid fibers after extrusion through a spinneret. Used in wet spinning processes such as in rayon or acrylic fiber manufacture.

Coalesced Filaments

Filaments stuck together by design or accident during the extrusion process.

Coalescence

Merging of two or more substances into a larger substance i.e. coalesced filaments.

Coarse End

See COARSE THREAD.

Coarse Filling

See COARSE THREAD.

Coarse Pick

See COARSE THREAD.

Coarse Thread

A yarn larger in diameter than other yarns being used in the fabric.

Coated fabric

1. A material composed of two or more layers, at least one of which is a textile fabric and at least one of which is a substantially continuous polymeric layer. The layers are bonded closely together by means of an added adhesive or by the adhesive properties of one or more of the component layers.
2. A textile fabric on which there has been formed in situ, on one or both surfaces, a layer, or layers, of adherent coating material.

Coating

The application of a semi-liquid material such as rubber polyvinyl chloride or polyurethane to one or both sides of a textile material. Once the coating has been dried (and cured if necessary) it forms a bond with the fabric.

Cobble

To correct a defectively processed fabric.

Cobbler

A defectively dyed or finished fabric returned for correction.

Cobwebbing

A fault in winding that causes some threads to lie in a straight line across the end of a package. It is caused by the yarn slipping beyond the normal extremity of the traverse during winding, and may result in yarn breaks during unwinding. It is sometimes called 'stitching', 'crossing', or 'webbing'.